paypal invoice ,postage,and supplier contacts request

paypal have limited my paypal account without warning, they have requested many things off me so far i have provided my Proof of address,supplier contacts,and photo ID which is still in pending. i have so far been able to prove about 4 outta 8 postage tracking numbers. but i dont keep any invoices what happens if i cant proof my invoice as i dont have any and also if i dont have tracking numbers to hand for all the ones asked of me? many thanks